| /* |
| * ------------------------------------------- |
| * MSP432 DriverLib - v3_10_00_09 |
| * ------------------------------------------- |
| * |
| * --COPYRIGHT--,BSD,BSD |
| * Copyright (c) 2014, Texas Instruments Incorporated |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * * Neither the name of Texas Instruments Incorporated nor the names of |
| * its contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, |
| * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * --/COPYRIGHT--*/ |
| #include "crc32.h" |
| #include <msp.h> |
| #include <debug.h> |
| #include <hw_memmap.h> |
| |
| void CRC32_setSeed(uint32_t seed, uint_fast8_t crcType) |
| { |
| ASSERT((CRC16_MODE == crcType) || (CRC32_MODE == crcType)); |
| |
| if (CRC16_MODE == crcType) |
| CRC32->INIRES16 = seed; |
| else |
| { |
| CRC32->INIRES32_HI = ((seed & 0xFFFF0000) >> 16); |
| CRC32->INIRES32_LO = (seed & 0xFFFF); |
| } |
| } |
| |
| void CRC32_set8BitData(uint8_t dataIn, uint_fast8_t crcType) |
| { |
| ASSERT((CRC16_MODE == crcType) || (CRC32_MODE == crcType)); |
| |
| if (CRC16_MODE == crcType) |
| HWREG8(&(CRC32->DI16)) = dataIn; |
| else |
| HWREG8(&(CRC32->DI32)) = dataIn; |
| } |
| |
| void CRC32_set16BitData(uint16_t dataIn, uint_fast8_t crcType) |
| { |
| ASSERT((CRC16_MODE == crcType) || (CRC32_MODE == crcType)); |
| |
| if (CRC16_MODE == crcType) |
| CRC32->DI16 = dataIn; |
| else |
| CRC32->DI32 = dataIn; |
| } |
| |
| void CRC32_set32BitData(uint32_t dataIn) |
| { |
| //CRC32->DI32 = dataIn & 0xFFFF; |
| //CRC32->DI32 = (uint16_t) ((dataIn & 0xFFFF0000) >> 16); |
| |
| HWREG16(&(CRC32->DI32)) = dataIn & 0xFFFF; |
| HWREG16(&(CRC32->DI32)) = (uint16_t)( |
| (dataIn & 0xFFFF0000) >> 16); |
| } |
| |
| void CRC32_set8BitDataReversed(uint8_t dataIn, uint_fast8_t crcType) |
| { |
| ASSERT((CRC16_MODE == crcType) || (CRC32_MODE == crcType)); |
| |
| if (CRC16_MODE == crcType) |
| HWREG8(&(CRC32->DIRB16)) = dataIn; |
| else |
| HWREG8(&(CRC32->DIRB32)) = dataIn; |
| } |
| |
| void CRC32_set16BitDataReversed(uint16_t dataIn, uint_fast8_t crcType) |
| { |
| ASSERT((CRC16_MODE == crcType) || (CRC32_MODE == crcType)); |
| |
| if (CRC16_MODE == crcType) |
| CRC32->DIRB16 = dataIn; |
| else |
| CRC32->DIRB32 = dataIn; |
| } |
| |
| void CRC32_set32BitDataReversed(uint32_t dataIn) |
| { |
| //CRC32->DIRB32 = dataIn & 0xFFFF; |
| //CRC32->DIRB32 = (uint16_t) ((dataIn & 0xFFFF0000) >> 16); |
| |
| HWREG16(&(CRC32->DIRB32)) = dataIn & 0xFFFF; |
| HWREG16(&(CRC32->DIRB32)) = (uint16_t)( |
| (dataIn & 0xFFFF0000) >> 16); |
| |
| } |
| |
| uint32_t CRC32_getResult(uint_fast8_t crcType) |
| { |
| uint32_t result; |
| ASSERT((CRC16_MODE == crcType) || (CRC32_MODE == crcType)); |
| |
| if (CRC16_MODE == crcType) |
| return CRC32->INIRES16; |
| else |
| { |
| result = CRC32->INIRES32_HI; |
| result = (result << 16); |
| result |= CRC32->INIRES32_LO; |
| return (result); |
| } |
| } |
| |
| uint32_t CRC32_getResultReversed(uint_fast8_t crcType) |
| { |
| uint32_t result; |
| ASSERT((CRC16_MODE == crcType) || (CRC32_MODE == crcType)); |
| |
| if (CRC16_MODE == crcType) |
| return CRC32->RESR16; |
| else |
| { |
| result = CRC32->RESR32_HI; |
| result = (result << 16); |
| result |= CRC32->RESR32_LO; |
| return (result); |
| } |
| } |
| |